> Markdown version of [/jobs/ext/1849352-senior-net-react](https://www.wearedevelopers.com/jobs/ext/1849352-senior-net-react). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior (.NET & React) - **Company:** Cognizant Technology Solutions Corporation - **Location:** Hartford, CT, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), .NET Framework, Agile Methodology, Application Performance Management, Microsoft Azure, C Sharp (Programming Language), Cloud Engineering, Code Coverage, Program Optimization, ECMAScript, HP Systems Insight Manager, Object-Oriented Software Development, Performance Tuning, Responsive Web Design, Secure Coding, Software Engineering, Systems Integration, Strategies of Testing, Data Logging, Enterprise Software Applications, .NET Core, ReactJS, Backend, Front End Software Development, Restful APIs, Software Version Control, Microservices - **Published:** July 8, 2026 - **Apply:** https://dejobs.org/x/x/C07518C9755941F98159812FE0515813/job/ ## About the Role * Extensive experience developing enterprise applications using C#, .NET Core, and .NET Framework . * Strong proficiency in React.js , JavaScript (ES5/ES6) , and modern front-end development methodologies. * Experience designing and implementing RESTful APIs , microservices, and system integrations. * Solid understanding of software engineering principles, object-oriented design patterns, testing methodologies, and secure coding practices. * Experience working in Agile development environments , utilizing version control systems and CI/CD pipelines. * Strong analytical, troubleshooting, and problem-solving skills with the ability to diagnose and resolve complex technical issues. These Will Help You Stand Out * Experience with cloud-native application development and deployment. * Knowledge of application monitoring, logging, and performance optimization practices. * Experience creating automated testing frameworks and improving test coverage across front-end and back-end solutions. * Familiarity with scalable architecture patterns and enterprise security standards. * Microsoft Certified: Azure Developer Associate or other relevant Microsoft/.NET or cloud certifications. ## Description As a Senior Software Engineer , you will make an impact by designing, building, and optimizing enterprise-grade applications using C#, .NET Core, .NET Framework, React.js, and modern JavaScript . You will be a valued member of the engineering team, collaborating with product managers, architects, business stakeholders, and cross-functional teams to deliver secure, scalable, and high-performing digital solutions., * Design and develop scalable enterprise applications using C#, .NET Core, and .NET Framework to support critical business operations. * Build and maintain RESTful APIs and backend services that enable seamless integration between systems and front-end applications. * Develop modern, responsive user interfaces using React.js, JavaScript ES5/ES6, and contemporary front-end development practices . * Enhance application performance, reliability, and maintainability through code optimization, refactoring, and adoption of engineering best practices. * Partner with product managers, architects, and business stakeholders to translate requirements into robust technical solutions and deliver high-quality software in an Agile environment. Work Model We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role's business requirements, this is a hybrid position in Hardfort, CT requiring 3 days attendance at a client office. Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs. The working arrangements for this role are accurate as of the date of posting. This may change based on the project you're engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations. ## Related Videos - [Watch Tests Go Brrrr! : Getting Started with Cypress in ReactJS](https://www.wearedevelopers.com/videos/282-watch-tests-go-brrrr-getting-started-with-cypress-in-reactjs) - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Functions Triggers using Azure Event Grids in Azure Blob Storage](https://www.wearedevelopers.com/videos/47-functions-triggers-using-azure-event-grids-in-azure-blob-storage) - [This Is Not Your Father's .NET](https://www.wearedevelopers.com/videos/967-this-is-not-your-father-s-net) - [Keith Cirkle of GitHub on React Fatigue](https://www.wearedevelopers.com/videos/1265-keith-cirkle-of-github-on-react-fatigue) ## Related Articles - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [The Best JavaScript Framework to Learn](https://www.wearedevelopers.com/magazine/229-the-best-javascript-framework-to-learn) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)